VLT® Power options

VLT® Advanced Harmonic Filter AHF 005 and AHF 010

Optimized harmonic performance for VLT® drives rated up to 250 kW
A patented technique reduces THD levels in the mains network to less than 5–10%
Perfect match for industrial automation, highly dynamic applications and safety installations
Line voltage and filter current:
- 3 x 380/400/500/600/690 V...10-480 A*
  * Achieve higher ratings by connecting in parallel. See AHF 005 or AHF 010 Design Guide for details.
Enclosure ratings:
- IP20 (An IP21/NEMA 1 upgrade kit is available)
- IP00 (Forced cooling is required. There is no fan in the IP00 unit. Separate cooling measures must be implemented in the cabinet as part of the installation)

VLT® Sine-wave Filter MCC 101

VLT® Sine-wave Filters are positioned between the AC drive and the motor to provide a sinusoidal phase-to-phase motor voltage
Reduces motor insulation stress
Reduces acoustic noise from the motor
Reduces bearing currents (especially in large motors)
Reduces losses in the motor
Prolongs service lifetime
VLT® FC series family look
Line voltage and filter current:
- 3 x 200 – 690 V, 2.5 – 800 A*
  * For higher power ratings, combine multiple modules.
Enclosure ratings:
- IP00 and IP20 wall-mounted enclosures rated up to 75 A (500 V) or 45 A (690 V)
- IP23 floor-mounted enclosures rated 115 A (500 V) or 76 A (690 V) or more
- IP54 both wall-mounted and floor-mounted enclosure rated up to 4.5 A, 10 A, 22 A (690 V)

VLT® dV/dt Filter MCC 102

Reduces the dU/dt values on the motor terminal phase-to-phase voltage
Positioned between the AC drive and the motor to eliminate very fast voltage changes
The motor terminal phase-to-phase voltage is still pulse shaped but its dU/dt values are reduced
Reduces stress on the motor’s insulation and are recommended in applications with older motors, aggressive environments or frequent braking which cause increased DC link voltage
VLT® FC series family look
Line voltage and filter current:
- 3 x 200 – 690 V ... 15-880 A*
  * For higher power ratings, combine multiple modules.
Enclosure ratings:
- IP00 and IP20/IP23 enclosure in the entire power range
- IP54 enclosure available up to 177 A

VLT® Common Mode Filter MCC 105

Positioned between the AC drive and the motor
They are nano-crystalline cores that mitigate high frequency noise in the motor cable (shielded or unshielded) and reduce bearing currents in the motor
Extends motor bearing lifetime
Can be combined with dU/dt and sine-wave filters
Reduces radiated emissions from the motor cable
Reduces electromagnetic interference
Easy to install – no adjustments necessary
Oval shaped – allows mounting inside the frequency converter enclosure or motor terminal box
Line voltage and filter current:
- 3 x 380-690 V........... 10-480 A

VLT® Brake Resistor MCE 101

Energy generated during braking is absorbed by the resistors, protecting electrical components from heating up
Optimized for the FC-series and general versions for horizontal and vertical motion are available
Built-in thermo switch
Versions for vertical and horizontal mounting
A selection of the vertically mounted units are UL-recognized
Power range:
- Precision electrical match to each individual VLT^® drive power size for FC 102, FC 202, FC 301 and FC 302

VLT® Line Reactor MCC 103

Ensures current balance in load-sharing applications, where the DC-side of the rectifier of multiple drives is connected together
UL-recognized for applications using load sharing
When planning load-sharing applications, pay special attention to different enclosure type combinations and inrush concepts
For technical advice regarding load-sharing applications, contact Danfoss application support
Compatible with:
- VLT® AutomationDrive, VLT® AQUA Drive and VLT® HVAC Drive
- 50 Hz or 60 Hz mains supply